The issue is mainly that I don't understand what is meant by the web app. I understood that it must support HTTP requests, but otherwise is it the same? Or is the difference in publishing?
I looked on documentation: https://developers.google.com/apps-script/guides/web. But I still do not understand the difference.
First, I thought that web app has its own UI and it mustn't be connected with the G Suite environment, but the documentation says:
Both standalone scripts and scripts bound to G Suite applications can be turned into web apps…
My thought wouldn't make sense for a bound script. Or would it? What is the difference?